Model of Soil-structure Interaction of Objects Resting on Finite Depth Soil Layers for Seismic Design

Authors

  • Zsuzsa B. Pap
    Affiliation

    Department of Structural Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

  • László P. Kollár ORCID
    Affiliation

    Department of Structural Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

https://doi.org/10.3311/PPci.14459

Abstract

In case of seismic design of structures the deformability and damping of the soil should be considered, which can be performed in several ways. The infinite soil half space can be approximated with the cone model, which gives constant values for the spring stiffnesses and dashpot characteristics, and an additional mass element for rocking motion. To approximate the dynamic impedance function of a soil layer more complex models were also applied. Most of the methods do not take into account the finite dimensions of the soil, which results significantly different behavior than spring-dashpot systems. To consider the effect of a finite layer a new simple model based on a physical approach is given for the horizontal excitation of strip foundations. Numerical verification is presented, and the parameter range is determined, where the application of the new model is recommended, since applying a spring-dashpot model results in significant errors.

Keywords:

soil-structure interaction; horizontal excitation; simplified model; finite soil layer

Published Online

2019-12-10

How to Cite

Pap, Z. B., Kollár, L. P. “Model of Soil-structure Interaction of Objects Resting on Finite Depth Soil Layers for Seismic Design”, Periodica Polytechnica Civil Engineering, 63(4), pp. 1204–1216, 2019. https://doi.org/10.3311/PPci.14459

Issue

Section

Research Article